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LNG 벙커링용 ESD 밸브의 동특성 모델링 및 제어기 설계
박주연(J. Y. Park),김학수(H. S. Kim),배지원(J. W. Bae),최지아(J. A. Choi),지상원(S. W. Ji),장지성(J. S. Jang) 유공압건설기계학회 2019 유공압건설기계학회 학술대회논문집 Vol.2019 No.11
Natural gas is one of the fuels what produce low levels of NOx and less CO₂. It is a colorless mixture of several gases, and when the temperature drops below -196℃ at atmospheric pressure, methane vapor becomes a liquid what is called Liquid natural gas. Since liquid natural gas is cryogenic liquid, it is likely to lead to a big accident if leaked. Therefore, emergency shut-down valve should be installed to cope with emergency situations. In this study, the numerical modeling of the LNG bunkering ESD valve, which is the emergency shut-down valve, was carried out and the dynamic characteristic were verified. Also, a sliding mode control has been applied to provide remote control in an emergency.